SongKong uses a number of configuration files, and creates various caches, logs and reports, these can be categorised as follows:
For Windows they are all stored within C:\Users\username\AppData\Roaming\SongKong,
For MacOS the configuration files are stored in ~Library/Preferences/SongKong, the other files are stored in ~Library/Application Support/SongKong
For Linux they are stored within $HOME/.songkong.
For Docker all configuration files are stored in the folder mapped to the /SongKong virtual folder.